Improvement of the Corrosion Resistance of PVD Hard Coating/Substrate Systems - Recent Developments

Hard coatings playa continuously increasing role in the field of tribology as well as for decorative applications. In both areas they are often also exposed to corrosive media. While especially hard nitride coatings show a high corrosion resistance for themselves, hard $coating_strate systems may su...

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Bibliographic Details
Published in한국표면공학회지 Vol. 32; no. 3; pp. 472 - 483
Main Authors Jehn, Hermann A, Kang, Sung-Goon
Format Journal Article
LanguageKorean
Published 1999
Subjects
Hard Coating
Corrosion
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Summary:Hard coatings playa continuously increasing role in the field of tribology as well as for decorative applications. In both areas they are often also exposed to corrosive media. While especially hard nitride coatings show a high corrosion resistance for themselves, hard $coating_strate systems may suffer from a severe corrosion attack due to the defects in the coating structure (pores, pinholes) resulting from the PVD-typical film morphology. While a huge number of investigations cover the tribological properties, only limited studies deal with the corrosion behavjour of coating substrate systems and attempts are made to improve their corrosion resistance. The present paper shortly describes the corrosion mechanisms and repots characteristic examples of the system behaviour. Special emphasis is laid on recent investigations to improve the corrosion resistance by alloying, interlayers or multilayered coating structures.es.
Bibliography:KISTI1.1003/JNL.JAKO199911922936319
ISSN:1225-8024